以下是使用PrepareStatement对象进行批处理的典型步骤顺序 -

• 使用占位符创建SQL语句。
• 使用prepareStatement()方法创建PrepareStatement对象。
• 使用setAutoCommit()将自动提交设置为false。
• 使用addBatch()方法在创建的Statement对象上添加SQL语句到批处理中。
• 在创建的Statement对象上使用executeBatch()方法执行所有SQL语句。
• 最后，使用commit()方法提交所有更改。

此示例代码是基于前面章节中完成的环境和数据库设置编写的。

以下代码片段提供了使用PrepareStatement对象的批量更新示例，将下面代码保存到文件：BatchingWithPrepareStatement.java -

// Import required packages
// See more detail at http://www.yiibai.com/jdbc/import java.sql.*;public class BatchingWithPrepareStatement {// JDBC driver name and database URLstatic final String JDBC_DRIVER = "com.mysql.jdbc.Driver";  static final String DB_URL = "jdbc:mysql://localhost/EMP";//  Database credentialsstatic final String USER = "root";static final String PASS = "123456";public static void main(String[] args) {Connection conn = null;PreparedStatement stmt = null;try{// Register JDBC driverClass.forName("com.mysql.jdbc.Driver");// Open a connectionSystem.out.println("Connecting to database...");conn = DriverManager.getConnection(DB_URL,USER,PASS);// Create SQL statementString SQL = "INSERT INTO Employees(id,first,last,age) " +"VALUES(?, ?, ?, ?)";// Create preparedStatemenSystem.out.println("Creating statement...");stmt = conn.prepareStatement(SQL);// Set auto-commit to falseconn.setAutoCommit(false);// First, let us select all the records and display them.printRows( stmt );// Set the variablesstmt.setInt( 1, 400 );stmt.setString( 2, "Python" );stmt.setString( 3, "Zhang" );stmt.setInt( 4, 33 );// Add it to the batchstmt.addBatch();// Set the variablesstmt.setInt( 1, 401 );stmt.setString( 2, "C++" );stmt.setString( 3, "Huang" );stmt.setInt( 4, 31 );// Add it to the batchstmt.addBatch();// Create an int[] to hold returned valuesint[] count = stmt.executeBatch();//Explicitly commit statements to apply changesconn.commit();// Again, let us select all the records and display them.printRows( stmt );// Clean-up environmentstmt.close();conn.close();}catch(SQLException se){//Handle errors for JDBCse.printStackTrace();}catch(Exception e){//Handle errors for Class.forNamee.printStackTrace();}finally{//finally block used to close resourcestry{if(stmt!=null)stmt.close();}catch(SQLException se2){}// nothing we can dotry{if(conn!=null)conn.close();}catch(SQLException se){se.printStackTrace();}//end finally try}//end trySystem.out.println("Goodbye!");
}//end mainpublic static void printRows(Statement stmt) throws SQLException{System.out.println("Displaying available rows...");// Let us select all the records and display them.String sql = "SELECT id, first, last, age FROM Employees";ResultSet rs = stmt.executeQuery(sql);while(rs.next()){//Retrieve by column nameint id  = rs.getInt("id");int age = rs.getInt("age");String first = rs.getString("first");String last = rs.getString("last");//Display valuesSystem.out.print("ID: " + id);System.out.print(", Age: " + age);System.out.print(", First: " + first);System.out.println(", Last: " + last);}System.out.println();rs.close();
}//end printRows()
}//end JDBCExample

SQL

编译上面代码，如下 -

F:\worksp\jdbc>javac -Djava.ext.dirs=F:\worksp\jdbc\libs BatchingWithPrepareStatement.java

Shell

执行上面代码如下所示 -

F:\worksp\jdbc>javac -Djava.ext.dirs=F:\worksp\jdbc\libs BatchingWithPrepareStatement.javaF:\worksp\jdbc>java -Djava.ext.dirs=F:\worksp\jdbc\libs BatchingWithPrepareStatement
Connecting to database...
Thu Jun 01 04:46:38 CST 2017 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.
Creating statement...
Displaying available rows...
ID: 100, Age: 35, First: Max, Last: Su
ID: 101, Age: 25, First: Wei, Last: Wang
ID: 102, Age: 35, First: Xueyou, Last: Zhang
ID: 103, Age: 30, First: Jack, Last: Ma
ID: 106, Age: 28, First: Curry, Last: Stephen
ID: 107, Age: 32, First: Kobe, Last: Bryant
ID: 200, Age: 30, First: Curry, Last: Stephen
ID: 201, Age: 35, First: Kobe, Last: BryantDisplaying available rows...
ID: 100, Age: 35, First: Max, Last: Su
ID: 101, Age: 25, First: Wei, Last: Wang
ID: 102, Age: 35, First: Xueyou, Last: Zhang
ID: 103, Age: 30, First: Jack, Last: Ma
ID: 106, Age: 28, First: Curry, Last: Stephen
ID: 107, Age: 32, First: Kobe, Last: Bryant
ID: 200, Age: 30, First: Curry, Last: Stephen
ID: 201, Age: 35, First: Kobe, Last: Bryant
ID: 400, Age: 33, First: Python, Last: Zhang
ID: 401, Age: 31, First: C++, Last: HuangGoodbye!F:\worksp\jdbc>